The Court did not say why they refused but Justice Thomas dissented and was joined by the newest addition to the Supreme Court, Neil Gorsuch, which blasted the Court for abdicating and for treating “the Second Amendment like a disfavored right.”
Thomas wrote, “The Framers made a clear choice: They reserved to all Americans the right to bear arms for self-defense. I do not think we should stand by idly while a State denies its citizens that right, particularly when their very lives may depend on it.”
Thomas also explained why the Court should of taken up the case. He points out that the Federal circuits have been divided and have come to different conclusion on the issue which is why the Court ought to hear the case.
Despite the sharply worded dissent it seems that the Court decided to not hear the case.
This is just another example of judicial abdication which the Court routinely does in matters that are controversial instead of doing it’s job which is to protect the individual’s natural rights.